Here is the full list of all 51 EARTH DEFENSE FORCE 4.1 The Shadow of New Despair achievements.
Cleared all stages on Normal difficulty as a Wing Diver.
Destroyed 5000 flying drones.
Defeated 20 Greater Wild Dragons.
Wing Diver's health has reached 550.
Destroyed 150 red drones.
Destroyed 6 Brains.
Destroyed 6 flying-type bug nests.
Defeated 360 Retiarii.
Destroyed 20 Argos.
Destroyed 6 motherships.
Defeated 40 king spiders.
Destroyed 12 quadruped fortresses.
Cleared all stages on Inferno difficulty as a Ranger.
Defeated 12,000 spider-type bugs.
Destroyed 900 Hectors.
Defeated 20,000 ant-type bugs.
Defeated 4000 flying-type bugs.
Destroyed 200 large transport ships.
Destroyed 30 Erginuses.
Defeated 24 queens.
Cleared all stages on Hardest difficulty as a Ranger.
Defeated 24 death queens.
Destroyed 2000 flying vehicles.
Defeated 200 Deroys.
Defeated 120 shield bearers.
Cleared all stages on Hard difficulty as a Ranger.
Defeated 2400 Dragons.
Destroyed 200 underground tunnel exits.
Ranger's health has reached 1000.
Cleared all stages on Normal difficulty as a Ranger.
Obtained 10% of all available weapons.
Reached a height of 200 meters.
Cleared all stages on Hard difficulty as a Wing Diver.
Cleared all stages on Hardest difficulty as a Wing Diver.
Cleared all stages on Inferno difficulty as a Wing Diver.
Cleared all stages on Normal difficulty as an Air Raider.
Cleared all stages on Hard difficulty as an Air Raider.
Cleared all stages on Hardest difficulty as an Air Raider.
Cleared all stages on Inferno difficulty as an Air Raider.
Cleared all stages on Normal difficulty as a Fencer.
Cleared all stages on Hard difficulty as a Fencer.
Cleared all stages on Hardest difficulty as a Fencer.
Cleared all stages on Inferno difficulty as a Fencer.
Obtained 50% of all available weapons.
Obtained all available weapons.
Destroyed 500 carriers.
Air Raider's health has reached 1000.
Fencer's health has reached 1250.
Rescued 5 other players in co-op play.
Rescued 50 other players in co-op play.
Healed another player in co-op play.